RT Journal Article SR Electronic T1 Sources of bias for authors of clinical practice guidelines JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1033 OP 1033 DO 10.1503/cmaj.061181 VO 175 IS 9 A1 Allan S. Detsky YR 2006 UL http://www.cmaj.ca/content/175/9/1033.abstract